Ahmed Kantari scored an 80th-minute penalty to earn Lens a 1-1 draw against in-form Bastia.
Replying to Ryad Boudebouz's 62nd-minute spot-kick, Kantari was on the mark to ensure that Bastia remain in the Ligue 1 relegation scrap.
They are unbeaten in 10 as a result of this, but had they won they would have been six points clear of second-bottom Lens.
Lens gave as good as they got and, on balance, would have a greater argument for deserving all three points.
The first chance was theirs, Pablo Chavarria...